What a CD is and how your money moves
A certificate of deposit (CD) is an account where you deposit money for a fixed period—usually three months to five years—and the bank pays you a set interest rate for leaving it there untouched. You hand over a lump sum, the bank locks it away, and at the end of the term you get your original money back plus the interest earned. The catch: if you withdraw before the term ends, you pay a penalty that eats into your earnings or principal.
The bank uses your money during that time—lending it out, investing it—and shares a portion of what it makes with you as interest. The longer you agree to leave the money alone, the higher the interest rate the bank typically offers. A three-month CD might pay 4.5 percent annual interest; a five-year CD might pay 5.2 percent. The exact rates vary by bank and change based on what the Federal Reserve does with interest rates.
When your CD matures (the term ends), the bank deposits your principal plus interest into a linked checking or savings account, or automatically rolls it into a new CD at the current rate. You choose what happens next when you open the account.
Key Takeaways
- You deposit a fixed amount of money for a set period, and the bank pays you a may provide interest rate that does not change during the term.
- Your money is locked in—withdrawing early triggers a penalty that typically ranges from one month to one year of interest, depending on the CD term.
- CDs are FDIC-insured up to $250,000 per depositor per bank, so your principal is protected even if the bank fails.
- Interest rates on CDs are higher than savings accounts because you are giving up access to your money for a defined time.
- When the CD matures, you decide whether to withdraw the money, move it to another account, or let it roll into a new CD automatically.
How the interest rate is set and what you actually earn
The interest rate on a CD is fixed—it does not move up or down during your term, even if the Federal Reserve raises or lowers rates. If you lock in 5 percent on a two-year CD, you earn 5 percent for the full two years, no matter what happens in the market. This is different from a savings account, where the rate can change monthly.
The bank sets CD rates based on what it expects to earn from lending your money out, what it pays for other deposits, and how much competition exists from other banks. When the Fed raises rates, banks typically raise CD rates too—but with a lag of a few weeks. When the Fed cuts rates, CD rates fall faster. Shopping around matters: one bank might offer 4.8 percent on a one-year CD while another offers 5.1 percent for the same term.
To calculate what you earn, use this formula: principal × annual rate × (term in years) = interest. A $10,000 CD at 5 percent for two years earns $1,000 in interest. Most banks compound interest daily or monthly, which means you earn a tiny bit of interest on the interest itself—but the difference is small on shorter terms.
Early withdrawal penalties and what they cost you
If you need your money before the CD matures, you can withdraw it—but the bank charges a penalty that reduces what you take out. The penalty is usually stated as a number of months of interest. A CD with a three-month penalty means you lose three months' worth of the interest you would have earned. On a $10,000 CD earning 5 percent annually, three months of interest is about $125, so you would get $10,000 minus $125 = $9,875.
Some CDs have steeper penalties: a five-year CD might carry a one-year penalty, meaning you lose a full year of interest if you withdraw early. A few banks offer "no-penalty CDs" with lower rates but no early withdrawal cost—useful if you think you might need the money but want better returns than a savings account.
The penalty comes out of your interest first. If you have not earned enough interest yet to cover the penalty, it comes out of your principal. For example, if you withdraw after two months of a one-year CD with a six-month penalty, you might get back less than you deposited.
FDIC insurance and what happens if the bank fails
CDs held at banks insured by the FDIC (Federal Deposit Insurance Corporation) are protected up to $250,000 per depositor per bank. This means if the bank fails, the FDIC reimburses you for your full balance—principal and accrued interest—up to that limit. If you have $250,000 in a CD at Bank A and $250,000 in a CD at Bank B, both are fully covered because they are at different banks.
If you deposit more than $250,000 at one bank, only $250,000 is insured. Some people split large amounts across multiple banks or use a brokered CD (sold through a brokerage firm) to get coverage on larger sums, though brokered CDs work differently and carry different risks.
FDIC coverage does not protect you from the bank's decision to change rates or from your own early withdrawal penalty. It only protects against the bank becoming insolvent. In practice, bank failures are rare, and FDIC insurance has never failed to pay out.
When the CD matures and what your options are
On the maturity date, your CD term ends and the bank stops paying interest at the locked-in rate. At that moment, you have three choices: withdraw the money, move it to another account at the same bank, or let it automatically roll into a new CD.
Most banks default to automatic renewal—they roll your principal and interest into a new CD at the current rate for the same term length. If rates have dropped, your new CD earns less. If rates have risen, you benefit. You usually have a grace period (often 7 to 10 days) after maturity to cancel the rollover and withdraw without penalty, so check your maturity date and act if you do not want the automatic renewal.
Some banks notify you by mail or email before maturity; others do not. Set a calendar reminder for your maturity date so you do not miss the window to make a change. If you want to move the money to a different bank's CD, you can withdraw at maturity and deposit elsewhere without penalty.
CD ladders and how to access money without penalties
A CD ladder is a strategy where you buy multiple CDs with different maturity dates so that one matures every few months or every year. For example, you might buy five one-year CDs, each starting one year apart. One matures every year, giving you access to a chunk of money without penalty while the rest keep earning the higher CD rate.
This approach lets you take advantage of higher CD rates while keeping some liquidity. If you need cash in an emergency, you wait for the next CD to mature rather than paying an early withdrawal penalty. It also lets you reinvest at new rates gradually instead of all at once.
A ladder works best if you have a lump sum to invest and expect to need some of the money over time. If you only have a small amount or need the money sooner, a regular savings account or money market account might be simpler, even though the rates are lower.
How CDs compare to savings accounts and money market accounts
CDs pay higher interest than savings accounts because you give up access to your money. A typical savings account at a major bank pays 0.01 to 0.5 percent; a CD for the same bank might pay 4.5 to 5.5 percent. The tradeoff is clear: more interest in exchange for locking up your money.
Money market accounts sit in the middle. They pay more than savings accounts (usually 4 to 5 percent) but less than CDs, and they let you withdraw money without penalty—though there are limits on how many withdrawals you can make per month. If you want flexibility and decent returns, a money market account works. If you want the highest rate and do not need the money, a CD wins.
CDs also differ from bonds and Treasury bills, which are issued by governments or corporations and can be sold before maturity on a secondary market. With a CD, you are locked in with the bank; there is no secondary market to sell it on early.
Frequently Asked Questions
Can I withdraw money from a CD before it matures?
Yes, but you pay an early withdrawal penalty set by the bank. The penalty is usually a certain number of months of interest—check your CD agreement for the exact amount. Some banks offer no-penalty CDs with lower rates if you want the option to withdraw without cost.
What happens if I do not do anything when my CD matures?
Most banks automatically roll your CD into a new one at the current interest rate for the same term. You have a grace period (usually 7 to 10 days) to cancel the rollover and withdraw your money without penalty. Set a reminder so you do not miss this window if you want to move the money elsewhere.
Are CDs safe if the bank fails?
Yes. CDs at FDIC-insured banks are covered up to $250,000 per depositor per bank. If the bank becomes insolvent, the FDIC reimburses you for your full balance, including accrued interest, up to that limit. Bank failures are rare, and the FDIC has never failed to pay out.
Is a CD a good place to put money I might need soon?
No. The early withdrawal penalty makes CDs expensive if you need the money within a year or two. Use a savings account or money market account instead if you might need access within the next few months. CDs work best for money you are certain you will not touch for the full term.
How do I know what CD rate to choose?
Longer terms usually pay higher rates, but rates change based on what the Federal Reserve does. Compare rates across banks using sites that list current CD offers. If you think rates will rise, a shorter CD lets you reinvest sooner at a higher rate. If you think rates will fall, a longer CD locks in the current rate.